Symptoms

The Service Field with the Document export time data source was added to the Document Definition. When exporting the document, this field's value remains empty.

Cause

The Document export time property of the document is recorded after the export was completed. This data is unavailable before and during the export, that is why it cannot be exported.

Resolution

To include the export time of the document in the exported data, follow the workaround described in the following article:

How to include the document export time to data files or database?